1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.monitoring.messaging;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.messaging.Message;
28  import com.liferay.portal.kernel.messaging.MessageListener;
29  import com.liferay.portal.monitoring.statistics.DataSample;
30  import com.liferay.portal.monitoring.statistics.DataSampleProcessor;
31  
32  /**
33   * <a href="MonitoringMessageListener.java.html"><b><i>View Source</i></b></a>
34   *
35   * @author Michael C. Han
36   * @author Brian Wing Shun Chan
37   */
38  public class MonitoringMessageListener implements MessageListener {
39  
40      public MonitoringMessageListener(
41          DataSampleProcessor<DataSample> dataSampleProcessor) {
42  
43          _dataSampleProcessor = dataSampleProcessor;
44      }
45  
46      public void receive(Message message) {
47          try {
48              doReceive(message);
49          }
50          catch (Exception e) {
51              _log.error("Unable to process message " + message, e);
52          }
53      }
54  
55      public void doReceive(Message message) throws Exception {
56          DataSample dataSample = (DataSample)message.getPayload();
57  
58          if (dataSample != null) {
59              _dataSampleProcessor.processDataSample(dataSample);
60          }
61      }
62  
63      private static Log _log =
64          LogFactoryUtil.getLog(MonitoringMessageListener.class);
65  
66      private DataSampleProcessor<DataSample> _dataSampleProcessor;
67  
68  }